Cathode rays are a beam of fast-moving electrons. Electrons are atomic particles which are negatively charged. Charges of opposite nature always attract each other. Because there is attraction between electrons and a positive electrode, cathode rays are deflected towards positive electrode. Hope this helps !!

**Explanation:**

Cathode rays are deflected towards the positive electrode.

**Cathode Rays:**
- Cathode rays are a stream of electrons that are emitted from the negative electrode, called the cathode, in a cathode ray tube (CRT).
- These electrons are negatively charged particles and are very small and light in mass.

**Deflection of Cathode Rays:**
- When an electric field is applied across a cathode ray tube, the cathode rays are deflected from their straight path.
- This deflection is caused by the electric field interacting with the negatively charged electrons in the cathode rays.
- Since like charges repel each other, the negatively charged electrons are repelled by the negative electrode (cathode) and are attracted towards the positive electrode (anode).

**Direction of Deflection:**
- According to the right-hand rule, the direction of deflection of cathode rays depends on the polarity of the electric field and the charge of the particles.
- In the case of a cathode ray tube, the electric field is created by the positive electrode (anode) and the negative electrode (cathode).
- Since the cathode rays are negatively charged, they are deflected towards the positive electrode (anode).
- Therefore, the correct answer to the question is option 'A' - cathode rays are deflected towards the positive electrode.

**Conclusion:**
- Cathode rays are deflected towards the positive electrode (anode) in a cathode ray tube.
- This deflection occurs due to the interaction between the negatively charged electrons in the cathode rays and the electric field created by the positive and negative electrodes.